Combined felly, rim, and dual pneumatic tire structure



Nov. 9, A1937. P. N. cHlAssoN 2,098,859 COMBINED FELLY, RIM, AND DUAL PNEUMATIC TIRE STRUCTURE s Smeets-sheet 1 Filed Feb. 8, 1937 hill. L

Nov. 9, 1937. P. N. cHIAssoN COMBINED FELLY, RIM, AND DUAL PNEUMATIC TIRE STRUCTURE 5 Sheets-Sheet 2 Filed Feb. 8, 1937 No. 9, 1937. P. Nfc'HlAssoN COMBINED FELLY, RIM, AND DUAL PNEUMATIC TIRE STRUCTURE Filed Feb. 8, 195'? 5 Sheets-Sheet 3 Patented Nov. 9, i937 UNITED STAT ES COMBINED FELLY,` RIM, DUALPNEU- MATIC TIRE STRUCTURE 12 Claims.

This invention relates to a combined felly, rim

and dual pneumatic tire structure designed primarily for use in connection with the wheels of automotivevehicies, butit is .to be understood that a structure, in aceordancevvith this invention, is to be used in any connection for 'which it may be found applioablaand the object of the invention is to provide,V in a mah-fieras hereinafter set fotha structure of the class referred to including a pair of l's ide'i'zvise opposed pneumatic tire elements arranged in a manner `relative to each other to make the structure readily adaptable for the front and Arear Wheels of the vehicle and to afford greater safety and comfort in motor vehicletrr'isportation, as Well as greater traction. Ii further object of the invention isto provide, lnanner as hereinafter set forth, a structure of the class referred to including a pair of inde lpendent pneumatic elements for traction purposes and with said elements connected With` a felly common thereto. The said elements are so arranged relative to each other to provide, if one becomes impaired While the vehicle is in motion, for the other to perform its traction function thereby reducing accidents to a minimum and with the non-impaired element being the equivalent of a spare tire.`

A further object of the invention is to provide, in a manner as hereinafter set forth, a structure of the class referred to including a pair` of inde.- pendent sideWise opposed pneumatic tire elements for a Wheel acting to reduce skidding at sharp corners and on slippery paveinentaand whereby when each of the front and each of the rear Wheels of the vehicle is equipped with a combination structure, in accordance withthis invention, eight pneumatic tire elements will support the vehicle instead of the usual four, resulting in a reduction of air pressure and, therefore, less d anger of blowouts.

A further object of the invention is, to provide, in a manner as hereinafter set forth, a structure of the class referred to including a pair of side- Wise opposed, closed tire elements Vseparated by afloating abutment element common thereto and with each tire element including a sectional outer shoe and an inflatable ,inner tube encompassed by the sections of the shoe.

Further objects of the invention are to provide, in a manner as hereinafterset forth, a structure of the Class referred to which is simple in its construction and arrangement, strong, durable, cornpact, thoroughly efficient in its use and comparatively inexpensive to manufacture.

To the above ends essentially and to others panying..drawingsvvherein is shown an eniloodi- -V .mentof-,the invention, but it is to 'be understood that changeavariations and modications may be resorted to Whichfall Within the scope of the invention as claimed.,

In the,drawings:.

Figure, 1is,a,cross.sectonal Vvievv of the cornbined--.felly, ,rim and dual pneumatic tire structure',1in ,normal position,

Figure'z isayievv similar to Figure i of a modiedforin With the inner tube not shown and pro- ,.Vdedwith, stress indicating indicia,

lgilreis-,a fragmentaryvievv in perspective of the oornbinedjlfelly, rim and slide-ble combined confining, separating and abutment element Vof ,tbesformssbowninrFeures 1 and 2, f Figure Lis a cross sectional View of still another modiedformof theV structure illustrating that portion thereof, remote frornthe roadway and with no pressure applied thereon, and Y Eigures 5, 6V and7 are fragmentary views in cross section of the form shown in Figure Z provided withthe stress indicating indicia and showingthe positions'of the outer shoe under varying vstress conditions. In these figures the inner tube is not shown.

.With reference to the drawings both forms include a pair of oppositely disposed annular outer 4shoes :of `lilte'form and a pair of annular cap membersof like`form. The shoes are indicated at'IlL'II and the caps at I2, I3. Each shoe in Gross. section has a squared head edge I4. Each Shoe'is open at its inner side. The body of each Shoe is indicated at I5 and includes an outer or .treadpart lI, an .outer side part I'l and an inner Sidep'art I8. j The parts I'I, I8 at their outer ends merge'into the 'part I6. Each shoe in cross sectionhas its outer side edge formed with an intermediate edge portion I9 of convex contour, an outerinwardly'inclined edge portion 29 merging at one end into one end of the edge I4 and an inner outwardly inclined edge portion 2l which merges-at oneend into the outer side of the innerV edge 22 of side part I1. The inner end of edge .portion I9 merges 'into the outer end of edgeiportion 2I. The outer end of edge portion I9 merges into the inner end of edge portion 2o. Theinner ledge.22 of part I'i in cross section is squared. Each shoe in cross section has its inner s ideedge :formed with an intermediate edge portion V23 Aof Convex contour, an outer inwardly inclined edge portion 24 merging at one end into the other end of the edge I4 and an inner outwardly inclined edge portion 25 which merges at one end into the outer side of the inner edge 26 of the side part I8. The inner end of edge portion 23 merges into the outer end of edge portion 25. The'outer end of edge portion 23 merges into the inner end of edge portion` 24. The edge portions 25, 24 are of the same length.' The edge portionv I9 is of materially greater length than edge portion 23. 'I'he edge portion 25 is of materially greater length than edge portion 20. The edge 22 in cross section is of greater length than the edge 26 in cross section. The side part I1 throughout is greater in thickness than the side part I8 throughout. Each shoe in cross section has segmental inner edge portion 21 of greater length than a half circle, a curved inner edge portion 28 of less length than and which is oppositely curved with respect to edge portion 21 and an edge portion 29 merging at its outer end into one end vof edge portion 21 and at its inner end into the outer side of edge 29 ci the side part I8. The outer end of edge portion 28 merges into the other end of edge portion 21 and at its inner end merges into the inner side of the edge 22 of the side part I1. The edge portion 29 is of greater length than edge portion 28 and inclines inwardly throughout from its point of mergence with edge portion 21. The inclination of edge portion 29 is greater than that of edge portion 25. The side part I1 gradually decreases in thickness from tread part I6 for the major portion of its length, in cross section and has its remaining part gradually increasing in thickness to its edge 22. The side part I8 gradually decreases in thickness for the major portion of its length from its edge 26 and has its remaining portion gradually increasing in thickness to tread part I6.

Each cap member is formed of an arcuate body portion 30 provided at each end with a lateral flange. The flanges are oppositely disposed and are indicated at 3I, 32 andare formed With reduced inner portions to provide grooves 33. The inner faces of the cap members form spaced continuations of the inner faces of the shoes. The cap members provide closures for the open inner ends of the shoes. Common to a shoe and its associated cap member is an inflatable innertube 34. v

- Each of the forms shown includes an annular slidable combined confining, separating and abutment element. In Figures 1, 2 and 4 the said elements are indicated at 35, 36 and 31 respectively and are of the oating type.4 Each of said elements is formed with an inner portion of uniform width in cross section and an outer portion which tapers throughout from said inner portion. The outer portion has its cross sectional length greater than that of the inner portion. The construction of the elements 35, 36 and 31 will be more specifically described hereinafter.-

With reference to Figure 1Y the structure includes a felly and a rim which are indicated generally at 38, 39 respectively. The felly 38 is formed of a pair of annular sections 40, 4I. The body of section 4I) in vertical section is of greater length than that of section 4I in Vertical section. The section 4B extends'inwardly from section 4I and is to be connected with the spokes, not shown, web, not shown or hub not shown, by spaced holdfast Vdevices and each will be of the form as indicated at 42. The sections 49, 4I are secured together byY spaced holdfast devices and each will be of the form as indicated at 43. The outer portions of the sections 40, 4I have their opposed inner faces dished out to form an outwardly opening endless pocket 44.

The rim 39 is formed of a pair of annular oppositely disposed spaced inner edgewise aligned sections 45, 46 of like form which are integral with the felly sections 4S, 4i respectively at the outer ends of the felly. Each rim section conu sists of 'an innerannular part 41 integral at inner endwith a felly section. The outer portion of the part i1 curves outwardlyY and merges into an intermediate annular part 48 disposed in out- Wardly directed angular relation with respect to part 41. The part 41 merges at its cuter side into the inner end of an outwardly directed flared annular nange 49. part 41 forms a seat for a part of a cap member.

' The partV 45 and the flange 49 provides respectively a holder and an abutment for a supporting and confining ring 5e. The latter consistsof an annular body part 5I of angle shaped cross section formed with an inner and an outer leg 52, 5S respectively. The leg 52 is of less length in cross section than that of the leg 53 in cross section. The leg 551 is integral with and eritends inwardly from the innerend of leg 53. The leg at its inner end is provided with a forwardly directed projection 54 for a purpose The curved portion. of the Y to be referred to. Formed integral with and eX- tending inwardly from the inner face of leg 53 is a band 55 which is disposed in concentric spaced relation to the leg 52. The ring provides a combined seat, separator and abutment fer and is common to one end of a side of a shoe and one endY of a side of the cap which is associated with the shoe. The leg 52 of ring 59 abuts the outer face of part 48 of a rim section. The leg 55:3 abuts the inner face of iiange 49 of a rim section. The leg 53 and flange 49 are detachably connected together by spaced countersnnk holdfast means 56, only one shown; When the strncture is set up the edge 22 of the side I1 of a shoe abuts the outer face of band 55, the edge portion 2! of side I1 abuts that portion of the inner face of leg 53 extended outwardly from band 55, the end edge of the outer side of a cap member and the outer flange of the latter abut the inner face of ring 55, the said outer fla-nge abuts the inner portion oi the inner face of leg 53, the said outer iiange abuts the outer face of leg and the projection on leg exu tends into groove 33 formed in the inner face of the outer flange. The felly, :iin sections and rings are termed a carrying means.

The element 35 is interposed between and bears kagainst the outer faces of the inner sides of the shoes, bears against the edges 26 cf the inner side parts of the shoes, bears against the end edges ci the inner sides of the cap members, and bears against the outer faces oi the inner anges of the cap members. The element 35 includes a hollow annular body part 5'.' which has its inner portion slidably mounted in pocket 44.

A body of lubricant 5S is arranged in pocket 4t.

'into each other or are connected together by sien any suitable means.V rI-"he inner portions. ofi' the side parts 43, 55 merge into. the ends of the? inner part 33. The chamber is. endless and die' vided into an inner and an outer compartmentv 58, 63 by the partition 62. Compartment-S-'-has lan outlet @3a. Integral Withthe outer:` facesof the portions 36 outwardly adjacent .and in proxf imity to the partition 52 is a. pair ofiv oppositely.

disposed curved combined lubricant collectingv and deflecting elements 10 of like form. 'The portions @3, at the inner endsof theelements:r 'iii are ported as at 'H for the discharge of they collected lubricant into lthe compartment` ES;

The elements 10 also provide vabutn'ients. for ay 'pair of oppositely disposed locking or clamping relative to the shoes and cap members the edgeportions of the inner sideparts I8. of thefshoes abut the inclined portions 61 of the sides of bodypart 5?, the edges 25. of the'side parts I8 of the shoes abut the outer faces ot the bands 1,4', the end edges of the inner sides of the cap niem-` bers and the forward faces 'ofv the inner flanges 32 seat against the inner races of the bands lll, the outer ends of the anges 32 abut the pcr tions 6@ of the sides of body part 5] and the rings I?. are interposed between-elements 1B, abut flanges 32, extend into the grooves of iianges 3.2, abut the portions 6l of. the sides lofzloody part 5.?

' and bear against the. outer faces -of .the` inner sides of the cap members, these latter .bei-ng removable. f

In the construction shown in Figures; 2V and3,; the rings 5@ and 'l2 are not employed... Thefel-ly and rim It in Figure 2 are of the same con: struction as that shown in Figure l with this exception that the flange .11 (which corresponds to rim flange 45 of rim 39.), of a rim section of rim 'l5 is provided on its innerfaceWith a band is for the same purpose as the band 55 and that the part 18 (Whichcorresponds to part i3 of rim 39) is formed with an outwardlydirected extension 19. The partrl and extension 'i9 are for the same purpose asleg 52V and exten- The element 36 employed in YFigures 2 and 3 is substantially the same as the element 35 of Figure l, with this exception that it is not provided with the curved elements'm, butin lieu thereof a pair of. oppositely extending bands 8l! having outwardly directed extensions 8|. The

bands es combine the functions of the elements so and rings 12. Otherwise than that as stated the construction of the rim and element 36 will be the same as that of rim 39 and element 35.

The construction shown in Figure 4 is the same as that set forth by Figures 2 and 3 with the exception that the element 31 Which corresponds to element 33 is formed of a pair of oppositely disposed sections of like form anchored together. The Width of the pocket 82 in the ielly 83 Will be such as not to require the use of a lubricant for element 3i. The latter is not ported. The drawings represent the top of the tire, or rather the opposite of that part of the tire which is in contact with the pavement. The edges of the median Walls, which are the inner side parts of the shoes have been forced outward and beyond the edges of the outer Walls. The vertical diameters have been lengtheried and the horizontal diameters shortened.

f'IThe-Cap.me1ntze1S-S11,OML inf Figures@ t0. '7i' atenei; removable v f .part oa the; shoe .Whioh extends from an elementgi, 33 or; 3 1. 4Vin cross section has an. internalttontour off approximately two: thmis. 0f` @s CIQIG.

.Eah fellvfa; shownin Figures;2d-,. 3 and 4 are termed carrying means. ,Y

The; description ofthe cushion action Will. be set forth-with respect to- Figures 2, 5, 6 and 7;. but it is to be understood that it also appliesto Figures 1 and- 4.

As thevwheel turns or Yrolls .and the VWeight of the vehicle is .applied to that part of the tire which is in contact with the ground,v the diam'f eters between A and C and A and B- Will -beV shortened causing a bulging at G and flattening speci-,ion ofeach ofthe forms ofthe circle and which kconstitutes thev first v cushion action. lD will come down againstrE. causing a bulging at H and a flattening of EV constituting the Asecond cushion action. It willV also shorten the .diameter between the cap mem--` ber and the tire tread producing pressure vand a. bulging at F which constitutes the third. cushion action. These actions take place substantially simultaneously.

Rocking action: The rocking is due to A beingforced downward'toward C When Weight is ap, plied and returning to normal position when relieved. Counteraction: Forcing rA toward C shortens the diameter betweenvthose two points and ilattensk the circle horizontallyf It also brings D nearer to B, causing a Iiattening of. Er and a bulging at H thereby shortening the Vertical dianeter.- VIE5 being brought nearer to Dwill also bring it, nearer to Av-vvhichjwill tend to restore the contour of' the circle tov its ,normal shape.V The primalfytrend is to hatten the circle and the secondary trend is to restore its contour,

Contact of the tire tread: There Will be less tendency'for the treadvto hatten against the pavement because of the straightY median Walls which have not 4so milch direct weight vapplied to them as they outer. Walls. 1 f Y When thev tiresV are properly iniiated and the vehicle in motion over smooth pavement, there will b e very little bulging` at F, and Without bulging at F. the contour the tread v,vvill not, be greatly aiected. Bulging at F will only occur. when .extra pressure is produced at that point, like striking an object, or an unev-eness in the road. Y

The tires will not Vbe pushed apart by the Weight of `the vehicle because the median Walls of the tires .are broughtV nearer the felly While the outer v Walls are bulging outwardly., The tendency will be tovpress the tires together instead of pushing them apart at the traction point, but will slightly separate them at the top or that part which is opposite the part in contact with the pavement. Y

Figure 7 shows the tires as they would appear after the Weight has been applied demonstrating the bulging at F, Gr and H.

What I claim is:

l. In a combined felly rim and dual tire structure, a pair of inner sideWise aligned pneumatic tires including outer shoes and cap members for closing the shoes, carrying means for the tires, and a floating slidable, annular, combined conning, separating and abutment element for and interposed between said tire Y 2. In a combined felly, rim and dual tire structure, a pair of inner sidewise aligned pneumatic separating and abutment element for and interposed between said tires, said members andshoes having aligned edges, and said means and element having laterally extended parts positionedy between and bearing against said aligned edges.

3. In a combined felly, rim and dual tire structure, a pair of inner sidewise aligned pneumatic tires including outer shoes and cap members for closing'the shoes, carrying means for the tires,V

a floating slidable, annular, combined confining, separating andr abutment element for and interposedrbetween said tires, and said carrying means provided centrally thereof f with a pocket into which said element slidably extends.

` 4. In a combined felly, rim and dual tire structure, a pair of inner sidewise aligned pneumatic tires including outer shoes and cap members for Yclosing the shoes, carrying means for the tires, a floating slidable, annular, combined confining, separating and abutment element for and interposed between said tires, said carrying means including a pair of inwardly arranged oppositely extending spaced bands, said element being formed with a pair of oppositely extending bands, said cap members bearing against the inner faces 30, of said bands, and said shoes bearing against the outer faces of said bands.

5. YIn a combined felly, rim and dual tirev y bers for closing the shoes, carrying means for the tires, a floating slidable, annular, combined conflning, separating and abutment element for and interposed between said tir'es, each of said shoes in cross Section having the inner face of its outer portion of a contour greaterthan a half circle, and eachrof rsaid shoes having its tread surface square in crossV section.

6. In a combined felly, rim and dualtire structure, a pair oiinner sidewise aligned pneumatic tires including outer shoes and cap members for closing the shoes, carrying means for the tires, a floating slidable, annular, combined confining, separating and abutment element for and interposed between said tires, and each of said cap members in cross section being of arcuate contour.

7. In a combined felly, rim and dual tire structure, a pair of inner sidewise aligned pneumatic tires including outer shoes and cap members for closing the shoes, carrying means for the tires, a iioating slidable, annular, combined confining, separating and abutment element for and interaoaasss posed between said tires, each of said members being of arcuateV contour in cross section and bearing against said means and elementand each of said shoes bearing against said means and element. 1

8. In a, combined felly, rim and dual tire structure, a pair of inner sidewise aligned pneumatic tires including outer shoes and cap members for closing the shoes, carrying means for the tires, a oating slidab1e,. annular, combined confining, separating and abutment'element for and interposed between said tires, and said element including an outer and an inner portion, said outer portion being taperedthroughout from said inner portion.

9; In a combined felly, rim and dual tire structure, a pair of inner sidewise aligned pneumatic tires including outer shoes and cap members for closing the shoes, carrying means for the tires, a oating slidable, annular, combined confining, separating and abutment element for and interposed between said tires, said carrying means provided centrally thereof with a pocket into which said element slidably extends, said element including an inner and an outer portion, said inner portion` extending into said pocket, said outer portion being tapered throughout from inner portion, and said outer portion having its cross sectional length'greater than that of said inner portion.

10. In a structure of the class referred to a felly, a rim integral with the latter, a pair of spaced cap members within the rim, a pair of inner sidewise aligned pneumatic tires including outer shoes extending into the rim'and closed by said cap members, a floating. slidable annular combined confining, separating and abutment element interposed between said tires and extended through Ythe rim 'into the felly, and bands carried by the rim and said element, said bands being interposed between said members and shoes.

11. The invention as set forth in claim 10 having saidfelly formed of a pair of sections anchored together, and having said rim formed of a pair of oppositely disposed spaced sections integral with the sections of the felly.

12. The invention as set forth in claim 10 having said felly formed of a pair of spaced aligned oppositely disposed sections, said rim formed of a pair of sections anchored together and each integral with a rim section, said cap members bearing against rim sections and said element, and said shoes bearing against said element and rim sections outwardly adjacent of said bands.

PLACID N. CHIASSON. 

